Combine Enchanted Books at the Anvil for the Fewest Levels
In vanilla, the order you merge books in changes how many levels the anvil costs. A bad order can make the final merge too expensive to finish. Enchant Oracle's anvil combiner works out the cheapest order for you.
Gather Your Books
1. Collect the enchanted books you want on the final item. You can get them from the table, using Choose outcome while holding a book, or from librarian trades.
2. Have the target item and an anvil ready.
3. Bank enough experience levels for the whole merge, not just the first step.
Use the Anvil Combiner
1. Press G and open the anvil combiner screen. If you can't find it, click Guide in the same menu to read where everything lives.
2. The combiner calculates the merge path with the lowest level cost.
3. Follow its order step by step at the anvil. Combine the books it pairs first, then apply the results to your item.
4. Don't skip ahead or swap the order. Doing so can raise the cost of later steps.
Clean Up Leftovers
If you end up with junk books you don't need, keep a grindstone nearby. The mod can recycle junk books on it automatically, which keeps your inventory tidy between enchanting sessions.